7188361 has 2 divisors, whose sum is σ = 7188362. Its totient is φ = 7188360.

The previous prime is 7188347. The next prime is 7188371. The reversal of 7188361 is 1638817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3728761 + 3459600 = 1931^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 7188361 - 2⁵ = 7188329 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7188341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3594180 + 3594181.

It is an arithmetic number, because the mean of its divisors is an integer number (3594181).

Almost surely, 2^7188361 is an apocalyptic number.

It is an amenable number.

7188361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7188361 is an equidigital number, since it uses as much as digits as its factorization.

7188361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 7188361 is about 2681.1118962102. Note that the first 3 decimals coincide. The cubic root of 7188361 is about 192.9937714439.

The spelling of 7188361 in words is "seven million, one hundred eighty-eight thousand, three hundred sixty-one".